function run_ccm(k)
load mnist_def_3;
load mnist_label;
L = knn2lap(nn(1:k,:)');
l = 60000;
n = size(Y,1);
Yt = Y(1:l);
Ys = Y(l+1:n);
tic
Yp = ccm(L,Yt);
slvtime = toc
trerr = calerr(Yp(1:l),Yt)
tserr = calerr(Yp(l+1:n),Ys)
%exit
end
